425 标准查询与下载

DS/ISO 7176-2:1992 轮椅.第2部分:电动轮椅动态稳定性的测定

This part of ISO 7176 specifies methods for deter-mining the dynamic stability of electric wheelchairs.

Wheelchairs. Part 2: Determination of dynamic stability of electric wheelchairs

DS/ISO 7176-9:1992 轮椅.第9部分:电动轮椅的耐气候试验

This part of ISO 7176 specifies methods for testing the effects of rain on the functioning of electric wheelchairs used outdoors and the effects of temperature changes on the functioning of wheelchairs taken outdoors after a period indoors. This part of ISO 7176 does not cover the effects of splashes from puddles, nor the resistance to corrosion.

Wheelchairs. Part 9: Climatic tests for electric wheelchairs

DS/ISO 7176-10:1992 轮椅.第10部分:电动轮椅攀越障碍物能力的测定

This part of ISO 7176 specifies a method for determining the obstacle-climbing ability of electric wheelchairs.

Wheelchairs. Part 10: Determination of obtacle-climbing ability of electric wheelchairs

DS/ISO 3019-3:1992 液压传动.变容泵和电动机.装配法兰盘和轴伸的尺寸及识别标记.第3部分:多边形法兰盘(包括圆形法兰盘)

1 This part of ISO 3019 specifies dimensions and establishes an identification code for mounting flanges of positive displacement rotary hydraulic fluid power pumps and motors having a geometry which cannot accept a flange covered in ISO 3019-2. 2 This part of ISO 3019 also specifies dimensions and establishes an identification code for shaft ends of positive displacement rotary hydraulic fluid power pumps and motors of the following types : — cylindrical shaft end with key; — conical shaft end with key and external thread; — cylindrical shaft end with metric involute spline. 3 This part of ISO 3019 establishes a metric series of mounting flanges and shaft ends for positive displacement rotary hydraulic fluid power pumps and motors. 4 This part of ISO 3019 provides — a minimum number of flanges and shaft sizes to cover probable present and future requirements; — dimensional interchangeability of flange and shaft end mountings; — flange and spigot dimensions which allow for recommended sealing arrangements when sealing is required between a flange and its mating housing; — identification codes for flanges and shaft ends — these codes can be used separately or in combination.

Hydraulic fluid power.Positive displacement pumps and motor.Dimensions and identification code for mounting flanges and shaft ends.Part 3: Polygonal flanges(including circular flanges)

DS/ISO 3019-2:1989 液压传动.容积式泵和液动机.装配法兰盘和轴伸的尺寸及识别标记.第2部分:两孔与四孔的圆法兰盘.米制系列

1 This part of ISO 3019 specifies dimensions and establishes an identification code for mounting flanges of positive displacement rotary hydraulic fluid power pumps and motors of the following types: — two-hole oval flanges; — four-hole square flanges; — four-hole rectangular flanges. NOTE — A series of circular and polygonal flanges, for products having geometry unsuitable for any of the above flanges, is included in ISO 3019/3. 2 This part of ISO 3019 also specifies dimensions and establishes an identification code for shaft ends of positive displacement rotary hydraulic fluid power pumps and motors of the following types: — cylindrical shaft end with key; — conical shaft end with key and extemal thread; — cylindrical shaft end with metric involute spline. NOTE — Additional shaft sizes required for circular and polygonal flanges are included in ISO 3019/3. 3 This part of ISO 3019 establishes a metric series of mounting flanges and shaft ends for positive displacement rotary hydraulic fluid power pumps and motors. The preferred series shall be used for all future pump and motor designs. The non-preferred series in annex A and the inch-based series in ISO 3019/1 should be avoided whenever possible. 4 This part of ISO 3019 provides — a minimum number of flanges and shaft sizes to cover probable present and future requirements: short and long flange spigot options are included; — dimensional interchangeability of flange and shaft end mountings; — a facility for making certain flanges from castings designed originally for sizes specified in ISO 3019/1; — flange and spigot dimensions which allow for recom-mended sealing arrangements when sealing is required between a flange and its mating housing (see annex B); — identification codes for flanges and shaft ends — these codes can be used separately or in combination.

Hydraulic fluid power. Positive displacement pumps and motors. Dimensions and identification code for mounting flanges and shaft ends. Part 2: Two- and four-hole flanges an shaft ends. Metric series

DS/ISO 3724:1989 液压传动. 滤芯元件. 流动疲劳特性的验证

This International Standard specifies a method for deter-mining the flow fatigue characteristics of a hydraulic fluid power filter element. It establishes a uniform method for verifying the ability of a filter element to withstand the flexing caused by cyclic differential pressures without altering its collapse/burst rating.

Hydraulic fluid power. Filter elements. Verification of flow fatigue characteristics

DS/ISO 2943:1989 液压传动.滤清器元件.材料和液体适应性的检验

This International Standard specifies a method for verifying the compatibility of the materials comprising a hydraulic fluid power filter element with a designated fluid, by verifying the ability of the filter element to maintain its collapse/burst rating after being subjected to the designated system fluid at an elevated temperature. The filter element mounting seal will not be included as part of the element.

Hydraulic fluid power. Filter elements. Verification of material compatibility with fluids

DS/ISO 3601-3:1989 流体动力系统.密封装置.0型橡胶密封圈.第3部分:质量验收标准

This part of ISO 3601 lays down the quality acceptance criteria for O-rings used in fluid systems the dimensions of which are standardized in ISO 3601-1. This part of ISO 3601 defines and classifies surface imperfec-tions on O-rings and specifies maximum acceptable limits for these imperfections. This part of ISO 3601 is also applicable to O-rings to be used in aerospace construction.

Fluid systems. Sealing devices. O-rings. Part 3: Quality acceptance criteria

DS/ISO 3019-1:1989 液压传动. 容积式泵和液动机. 法兰盘和轴伸的尺寸及识别标记.第1部分:以米制单位表示的英制系列

1 This International Standard specifies sizes, dimensions and an identification code for positive displacement hydraulic fluid power pump and motor mounting flanges of the following types : — two-bolt flanges; — four-bolt flanges. 2 It also specifies sizes, dimensions and an identification code for positive displacement hydraulic fluid power pump and motor shaft ends of the following types : — straight shafts without thread; — straight shafts with thread; — tapered shafts with thread; — 30° involute spline. 3 It provides : — a minimum number of flange and shaft sizes; — composite dimension reference and identification codes for pumps and motors; — simplified dimensional interchangeability with regard to flanges and shafts; — preferred sizes and dimensions for new designs.

Hydraulic fluid power. Positive displacement pumps and motors. Dimensions and identification code for mounting flanges and shaft ends. PartI: Inch series shown in metric units

DS/ISO 3662:1989 液压传动. 泵和电动机.几何位移量

This International Standard established the geometric displacements (V) of hydraulic fluid power pumps and motors having rotating or oscillating drives. This International Standard is also applicable to variable displacement units; in such cases, the values refer to the maximum displacement.

Hydraulic fluid power. Pumps and motors. Geometric displacements

DS/ISO 3722:1989 液压传动. 液体样品容器. 合格和清洁控制方法

This International Standard specifies a method forqualifying and controlling the cleaning methods for sample containers used in conjunction with contaminational analysis techniques on hydraulic fluids used in industrial, mobile, marine and aerospace hydraulic fluid power applications. It establishes a means for ensuring that the accuracy of particulate contamination analyses in hydraulic fluid power systems is not degraded by alack of sample container cleanli-ness.

Hydraulic fluid power. Fluid sample containers. Qualifying and controlling cleaning methods

DS/ISO 3723:1989 液压传动. 滤芯元件. 端向负荷试验方法

This International Standard specifies a method for verifying the end load rating for a hydraulic fluid power filter element. It also verifies the ability of a hydraulic fluid power filter element to withstand the designated axial loading imposed by installation and use.

Hydraulic fluid power. Filter elements. Method for end load test

DS/ISO 3322:1989 液压传动系统和元件. 油缸.公称压力

This International Standard provides a selection of nominal pressures for hydraulic and pneumatic fluid power cylinders.

Fluid power systems and components. Cylinders. Nominal pressures

DS/ISO 3938:1989 液压传动.污染分析.分析资料报告方式

This International Standard specifies methods for reporting data relative to contamination levels of hydraulic fluids used in industrial, mobile and marine applications for the following types of contamination analysis techniques: a) microscopic particle counting; b) automatic particle counter; c) gravimetric. This International Standard is intended to establish the minimum information required to allow valid comparison and interpretation of contamination level data.

Hydraulic fluid power. Contamination analysis. Method for reporting analysis data

DS/ISO 3968:1989 液压传动.过滤器.压降与流量特性关系的评定

1 This International Standard specifies a procedure for evaluating the pressure drop versus flow characteristics of in-dustrial oil hydraulic filters and provides a basis of agreement between the filter manufacturer and user. 2 Two standards of measurement are specified : a) Class A — For accurate evaluation for referee purposes — requiring laboratory conditions. b) Class B — For evaluation for general purposes — requiring test facilities less stringent that laboratory conditions. 3 This International Standard specifies the method of measuring the pressure drop across a hydraulic fluid filter under various conditions of flow.

Hydraulic fluid power. Filters. Evaluation of pressure drop versus flow characteristics

DS/ISO 3939:1989 流体动力系统和组件.多层密封装置.测量叠层高度的方法

This International Standard specifies methods for measuring sealing devices having more than one seal in the set. The sets are composed of homogeneous and/or fabric-reinforced fluid power lip sealing rings of various configurations such as V, Y, U and W, with or without adapters. This International Standard also specifies methods for measuring stack height of multiple lip packing sets in order that both supplier and user can determine that the sets are to an acceptable dimensional standard. It is not the intention of this International Standard to specify the dimensions for packing sets or their components, since such dimensions depend on the material being used, on the section and on the type of design.

Fluid power systems and components. Multiple lip packing sets. Methods for measuring stack heights

DS/ISO 4021:1989 液压传动.微粒污染分析.工作系统管道中液流取样的提出

This International Standard specifies a method of extracting dynamic fluid samples from a line of an operating hydraulic fluid power system. The hydraulic fluid samples must be representative of the particulate contamnant in the fluid flowing at the point of sampling. (The samples are used for particulate contamination analysis.)

Hydraulic fluid power. Particulate contamination analysis. Extraction of fluid samples from lines of an operating system

DS/ISO 4392-1:1989 液压传动.第1部分:在恒低速和恒压力的情况下液压马达特性的测定

This part of ISO 4392 describes a method of determining the low speed characteristics of positive displacement rotary fluid power motors, of either fixed or variable displacement types. The method involves testing at stow speeds which may generate frequencies having a significant influence upon the steady continuous torque output of the motor and affect the system to which the motor would be connected. The accuracy of measurement is divided into 3 classes, A, B and C which are explained in the annex.

Hydraulic fluid power. Determination of characteristics of motors. Part 1: At constant low speed and at constant pressure

DS/ISO 4392-2:1989 液压传动.液压马达特性的测定.第2部分:起动性

This part of ISO 4392 specifies two test methods for determining the startability of rotary hydraulic motors. It describes two comparable methods of measurement, namely the constant torque method (see clause 6) and the constant pressure method (see clause 7). Since the results obtained by these two methods are equivalent no preference is given to either. The accuracy of measurement is divided into three classes A, B and C, which are explained in annex B.

Hydraulic fluid power. Determination of characteristics of motors. Part 2: Startability

DS/ISO 3320:1989 液压传动系统和元件. 油缸内径和活塞杆直径.米制系列

This International Standard establishes a metric series of cylinder bores and piston rod diameters for application to hydraulic and pneumatic fluid power cylinders. This International Standard only applies to the dimensional criteria of products manufactured in conformity with this International Standard; it does not apply to their functional characteristics.

Fluid power systems and components. Cylinder bores and piston rod diameters. Metric series